Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated silhouette of a marquise diamond, its tapered points drawing the eye along the finger like a whispered secret. This semi-set halo engagement ring foundation in warm 18K rose gold offers a delicate frame, handcrafted with precision in our Williamsburg studio.

The band’s subtle curve and polished finish balance the dramatic shape of the 6 x 3 mm marquise center, designed to sit low for everyday wear without sacrificing sparkle. Each prong is meticulously formed to cradle your chosen stone securely, while the halo setting promises a radiant surround that enhances brilliance and presence.

Crafted from responsibly sourced 18K rose gold, this piece reflects our commitment to ethical jewelry through lab-grown diamonds—offering clarity and sustainability in equal measure. The warm metal tone complements a variety of skin tones, while the low-profile design ensures comfort beneath gloves or alongside stackable bands.

Ideal for those who appreciate architectural elegance with a soft glow, this mounting invites personalization with your preferred marquise diamond. Resizing is straightforward, and our team guides you through care and lead times with ease.

Explore this semi-set halo ring in person at our Williamsburg workshop or begin your custom design journey online—where expert craftsmanship meets thoughtful, pressure-free collaboration.

Haejin Jewelry stands as a Brooklyn fine-jewelry studio dedicated to lab-grown diamond engagement rings, blending ethical craftsmanship with local artistry to create pieces made for daily life and lasting meaning.

See how your design comes to life with our Ring Design Online, or start a truly custom piece from scratch in our Williamsburg studio.

Explore our Guides & Education and Stories & Lifestyle for diamond education, care tips, and real studio stories.